Refinement of the autoneutralization lifetimes of short lived states of SF−6

Previous measurements of the autoneutralization lifetime of SF−6 indicated there are multiple states (lifetimes) and that the distribution of states is controlled, at least in part, by the temperature of the SF6 molecules prior to electron capture. These measurements indicated the existence of a short lived state with a lifetime of the order of 2 μs. The experimental apparatus has been revised to confirm the existence of the short lived state and provide a more accurate measurement of the lifetime.